18405985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{16657}}^1$

素因数の和:16692

約数の個数: 16

約数和(自身を含む): 25186896

約数和(自身を除く): 6780911

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 16657, 83285, 216541, 283169, 1082705, 1415845, 3681197, 18405985]

約数ペア:

[(1, 18405985), (5, 3681197), (13, 1415845), (17, 1082705), (65, 283169), (85, 216541), (221, 83285), (1105, 16657)]